Project Detail

Brunswick-Topsham Hydroelectric

Brunswick-Topsham, ME

Scope of Work

Construction of a 19 MGW power generating facility.

Project Details

  • Drilled, blasted and excavated 115,000 cubic yards of rock
  • Constructed a 600 foot fish ladder
  • Constructed a two-stage cofferdam of timber crib, concrete and sheet piling to divert the flow of water with flood flows up to 50,000 cubic feet per second
  • Constructed a 200 foot temporary bridge
  • Constructed 19,000 cubic yards of reinforced concrete for the powerhouse
  • Installed Unit No.1 turbine generator – a 12 MGW Allis Chalmers vertical Kaplan Turbine
  • Installed Units No. 2 and 3 turbine generator – two 3.5 MGW Allis Chalmers Vertical Horizontal Units
  • Constructed a 500 foot long by 40 foot high dam and twin tainter gates consisting of 15,000 cubic yards of reinforced concrete